Name: Keto Rhubarb Custard Pie
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: American
Ingredients: 1 1/2 cups almond flour; 2 tbsp coconut flour; 1/4 cup butter, melted; 2 tbsp powdered erythritol; 1/2 tsp cinnamon; 3 large eggs; 3/4 cup heavy cream; 1/2 cup erythritol; 2 cups rhubarb, chopped; 1 tsp vanilla extract; Pinch of salt

Jump to Recipe

Keto Rhubarb Custard Pie is the perfect balance of tangy and sweet, making it a standout treat for anyone craving a satisfying low carb dessert. This recipe combines creamy custard, fresh rhubarb, and a buttery almond crust to create a rich and comforting pie. Whether you are following a keto lifestyle or simply want a low carb dessert, this pie delivers bold flavor with simple ingredients and minimal effort.

Story

Keto Rhubarb Custard Pie brings back memories of summer kitchens filled with the scent of fresh rhubarb and warm spices. Growing up, rhubarb always showed up in seasonal desserts, but this Keto Rhubarb Custard Pie quickly became a favorite because it blends tradition with a modern low carb twist. While rhubarb has a naturally tart taste, this Keto Rhubarb Custard Pie balances it perfectly with a creamy filling and a lightly sweet crust. Over time, this Keto Rhubarb Custard Pie became a reliable recipe for gatherings because it feels both classic and refreshingly different. Even better, Keto Rhubarb Custard Pie uses simple ingredients that come together quickly, which makes it ideal for busy days.

Ingredients

1 1/2 cups almond flour
2 tbsp coconut flour
1/4 cup butter, melted
2 tbsp powdered erythritol
1/2 tsp cinnamon
3 large eggs
3/4 cup heavy cream
1/2 cup granulated erythritol
2 cups fresh rhubarb, chopped
1 tsp vanilla extract
Pinch of salt

Step-by-Step Instructions

Preparing the Ingredients

Preheat your oven to 350°F and grease a pie dish, then mix almond flour, coconut flour, melted butter, powdered erythritol, and cinnamon to form a soft dough that will become your cinnamon almond crust.

Cooking Instructions

Press the dough evenly into the pie dish and bake for 8–10 minutes until lightly golden, then whisk eggs, heavy cream, granulated erythritol, vanilla, and salt until smooth, fold in chopped rhubarb, pour the mixture into the crust, and bake for 35–40 minutes until the center sets before allowing the pie to cool completely.

Tips for Perfect Results

Common Mistakes to Avoid

Avoid adding too much rhubarb at once because excess moisture can affect the custard texture, and do not skip pre-baking the crust since it helps prevent sogginess and keeps your sugar-free pie firm.

Pro Tips for Better Flavor

Use fresh rhubarb for the best taste, adjust sweetness slightly depending on your preference, and allow the pie to chill before slicing so the custard fully sets and delivers clean slices.

Serving and Storage

How to Serve

Serve Keto Rhubarb Custard Pie chilled or slightly at room temperature, optionally topped with whipped cream or a sprinkle of cinnamon for extra richness.

How to Store Leftovers

Store leftover pie in an airtight container in the refrigerator for up to four days, and reheat gently or enjoy cold for the best texture.

Conclusion

Keto Rhubarb Custard Pie is a simple yet satisfying dessert that highlights the unique flavor of rhubarb while keeping carbs low and taste high, making it a great addition to your seasonal baking routine.

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Frequently Asked Questions

Can I use frozen rhubarb instead of fresh?

Yes, you can use frozen rhubarb, but thaw and drain it well first to remove excess moisture so the custard sets properly.

Is this pie suitable for strict keto diets?

Yes, this pie uses low carb ingredients like almond flour and erythritol, which makes it suitable for most keto meal plans.

Can I make this pie ahead of time?

Absolutely, this pie tastes even better after chilling, so making it a day in advance helps improve both flavor and texture.